This research intended to study the objectives and contents of the first grade of high school textbooks in terms of their focus on research-oriented approach and inclusion of essential research skills. Qualitative methods and triangulation were adopted to acquire a deeper understanding of the issue. The sample consisted of general educational objectives of the Islamic Republic of Iran, educational goals of the high school stage and the first grade of high school’s textbooks of physics, biology, social studies, Persian literature, “faith and life” [Islamic studies] and the authors of these textbooks. Findings showed that in percentage, research-oriented elements are addressed 8.16%, 6.45%, 48%, 24%, 40%, 4% and 16% by general objectives of education in the IRI, objectives of the high school stage, physics, social studies, biology, Qur’an and Islamic studies and Persian literature respectively. In the next stage, the contents of the textbooks were analyzed with regard to research-oriented approach. In overall, the highest frequency of research-related issues belongs to problem solving, while tolerance has received the least share. Finally, to detect the cause of this composition of elements in the textbooks, to identify the problems and to develop research-oriented approaches in the educational system, interviews with authors of these books were carried out and analyzed.